A millionaire businessman who is serving an 8-year prison sentence for a Congressional corruption scandal has been named in a lawsuit for his involvement in a $50 million mortgage fraud scheme.

Thomas Kontogiannis, 60, is being sued by Manhattan-based DLJ Mortgage Capital Inc. for his alleged involvement in at least 95 real estate sales and mortgage loan transactions in the Brooklyn and Queens areas that were sold to DLJ and other financial institutions.